Source: I still project pictures and text copyright belongs to the original author, if there is infringement, the background private message contact delete! In the early stage of on-site management of exterior wall coating construction, the operation center cooperated with the group purchasing center to analyze the characteristics and application requirements of exterior wall coating
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For details, please refer to “material disclosure of exterior wall coating construction”
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In view of the exterior wall coating construction stage, what matters need attention? The following we discuss one by one: 01 base control and process convergence (1) exterior wall base control, exterior wall base quality control determines 80% of the exterior wall molding quality
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Before the climbing frame is lifted, it is required to strictly carry out the inspection and acceptance, focusing on: large vertical surface, internal and external corners, drip lines, special lines, drainage pipes, joints, etc
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If the control of exterior wall basement is not in place, the later use of hanging basket rectification has high cost and poor effect
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In the later stage, the joint can not be closed or the levelness is poor
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The quality control of K-board is difficult because it is in the position of floor connection, but it has great influence on the quality of exterior wall base
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During the construction, the formwork reinforcement should be done well to avoid disturbance in the process of demolition, which can effectively improve the quality of the base at the K plate（ 2) Interface division and process connection: balcony ceiling putty and exterior wall coating are easy to cause cross pollution
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It is suggested that they should be assigned to the exterior wall team and be constructed simultaneously with the exterior wall
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The balcony skirting line shall be paved before the construction of the real stone paint on the exterior wall, and the anti ridge position spraying and closing shall be completed when the real stone paint on the balcony is sprayed
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The gluing of external windows and sliding doors shall be carried out on the base (structural surface or plastering surface), and the putty construction shall be carried out after gluing
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The gluing process is very important, and the reverse process is easy to cause leakage
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When spraying, stick masking paper to protect the finished product
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Earthwork backfill should avoid construction with exterior wall coating at the same time, dust mixed coating sprayed to the wall directly affects the appearance quality of exterior wall
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02 construction process (1) there may be anti-counterfeiting and shoddy materials in the putty for exterior wall, so the acceptance and record shall be made when entering the site, and the purchase order data and product certificate shall be checked to ensure that it is the designated brand product of our company
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Putty should be stored indoors in a dry, cool and ventilated place to avoid moisture
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Oily release agent should be avoided in the construction of aluminum mold, which will cause the putty layer to fall off（ 2) the closed primer is a transparent emulsion, and it is an important functional material
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Materials need to be diluted on site
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Such as excessive dilution, easy to lead to wall flower, pan alkali
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According to the manufacturer’s guidance and the amount of on-site whole layer proofing, the coating rate can be calculated, the on-site amount can be checked, and the process can be supervised to be complete and diluted properly（ 3) Mixed batch use of topcoat is easy to cause color difference, and the same facade material shall not be used in mixed batch
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There is no obvious label for different batches of topcoat
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It is suggested that the topcoat should be stored in batches according to the order of arrival on site, and the use should be reasonably planned（ 4) Topcoat is very important to increase the gloss and dustproof of exterior wall
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The short-term effect of the topcoat is not obvious, whether the construction is difficult to distinguish by naked eyes, and it is easy to cut corners
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According to the manufacturer’s guidance and the amount of on-site whole layer proofing, the coating rate can be calculated, the on-site amount can be checked, and the process can be supervised
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03 details (1) coating rate control coating rate has a great impact on the construction effect, but the team often copy the experience of the external wall coating construction, ignoring the control of the coating rate
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It is suggested to increase the coating rate for acceptance of the whole layer construction template, and the coating rate of the template shall not be lower than the manufacturer’s guidance
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According to the proofing results and the manufacturer’s guidance, the theoretical coating rate of the project is obtained（ 2) To avoid the occurrence of joint marks, hanging baskets are often used in the construction of external walls
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Improper treatment of joint parts in different hanging baskets construction will easily cause joint marks and affect the appearance
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The layout of hanging basket should be planned in advance, and the boundary should be set at the joint, internal and external corners, etc
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The large gable should be constructed with two hanging baskets at the same time to avoid the vertical joint ■ the appearance of vertical joint is poor
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(3) the detail closing parapet and balcony counter sill should be sloped 5% to the inside to prevent the rainwater from polluting the topcoat
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The deformation joint shall be installed layer by layer with the climbing frame lifting
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Before the coating construction, attention shall be paid to whether the deformation joint plate is deformed and the surface is clean（ 4) In the process of proofing, the manufacturer should guide the construction team to proofing one by one, so as to ensure that the construction team is clear about the material requirements and methods, and firmly put an end to “empiricism”
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The first batch, the first building, the first construction must be clear standard, correct wrong behavior
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A good case of facade construction 04 linkage factory project purchase is not only the manufacturer’s materials, but also the manufacturer’s service, and the manufacturer is also the most familiar expert on materials
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The manufacturer can be required to carry out technical disclosure and proofing assistance on site, and the large-scale construction can only be carried out after the sample is accepted by the engineering, design and other parties
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In view of the problems and doubts in the construction process, contact the manufacturer in time to answer questions, so as to avoid large-scale mistakes and remedy afterwards
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Regularly invite manufacturers to the site to check the materials, construction ratio and usage, so as to avoid the entry of fake and shoddy products, substandard quality and shoddy work
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The facade appearance and quality is an important sensitive point for the owner, and also an important foundation for the high quality of the community
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Once the external wall quality is formed, the later rectification is difficult, dangerous and ineffective
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How to ensure that the quality of the external wall is up to the standard at the early stage, and the construction is formed at one time, which should be deeply studied by every front-line engineer
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